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  • Title: Two-year follow-up study to evaluate the reduction of left ventricular mass and diastolic function in mild to moderate diastolic hypertensive patients.
    Author: Beltman F, Heesen W, Smit A, May J, de Graeff P, Havinga T, Schuurman F, van der Veur E, Lie K, Meyboom-de Jong B.
    Journal: J Hypertens Suppl; 1998 Oct; 16(6):S15-9. PubMed ID: 9856379.
    Abstract:
    OBJECTIVE: To compare the effects of two antihypertensive agents, amlodipine and lisinopril, on left ventricular mass and diastolic filling in patients from primary care centers with mild to moderate diastolic hypertension. STUDY DESIGN: A second-year, open follow-up of a prospective, double-blind, randomized, parallel group, comparative study. METHODS: Male and female patients between 25 and 75 years-of-age with elevated diastolic blood pressure (four measurements > or = 95 mmHg from multiple measurements taken on three occasions and average diastolic blood pressure < 115 mmHg) were recruited from a population survey. After 4 weeks' placebo run-in, 71 patients were included of whom 60 finished the first study year and 51 finished the second study year. Patients were randomly assigned to receive doses of 5-10 mg amlodipine or 10-20 mg lisinopril, which were titrated on the basis of the effects on blood pressure. Primary endpoints were left ventricular mass index (LVMI) and early to atrial peak filling velocity. Office and ambulatory blood pressure were considered secondary endpoints. RESULTS: The decrease in blood pressure was equal for both treatment regimens in the first year. A statistically significant (P< 0.001) decrease in LVMI in both treatment groups was observed in the first year [-11.0 g/m2 (95% Cl -6.0 to -16.1) in the amlodipine group and -12.6 g/m2 (95% Cl -8.2 to -17.0) in the lisinopril group]. Early to atrial peak filling velocity did not change significantly within the treatment groups in the first year [+0.07 (95% CI -0.01 to +0.15) in the amlodipine group and +0.01 (95%9 Cl -0.06 to +0.08) in the lisinopril group. Blood pressure, LVMI and early to atrial peak filling velocity did not change in the second year of treatment. No significant differences in primary and secondary endpoints between treatment groups were found in the first or second year. CONCLUSION: The effects of amlodipine and lisinopril on left ventricular mass and early to atrial filling peak velocity after 2 years of treatment were similar and these effects were already observed after 1 year of treatment. Additional studies of longer duration (> or = 4 years) and with a larger sample size are recommended.
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